PMDX Forum

General Category => SmartBOB controllers and dedicated accessories => Topic started by: broered on January 14, 2016, 06:17:16 PM

Title: PMDX-422 - Signal names for J11 Pins
Post by: broered on January 14, 2016, 06:17:16 PM

It's possible to buy "USB-A to header" cables if you intend to put a NUC type computer in your electronics package with the PMDX-422 and other components.  The PMX-422 header pins don't have any labeling.  Looking at the bottom of the board, I can tell which pin is the shield ground but I'm just guessing about the remaining pins.  Please confirm or correct this:

When viewing the board with the USB connector on the RIGHT, signal names of the pins, from TOP to BOTTOM, are:

Shield Ground
Gnd (black)
USB+ (green)
USB- (white)
+5V (red)

Would be nice to have this added to the Quick Start Guide

Thanks

Title: Re: PMDX-422 - Signal names for J11 Pins
Post by: Steve Stallings on January 14, 2016, 06:57:55 PM

Because of the risk of damage by getting the pinout wrong, we did not
put the pinout of J11 in the documentation, rather we expected our
customers to purchase a prefabricated cable from us. Swapping the
power leads WILL destroy the PMDX-422.

Since your application requires a cable which we do not sell, I will
confirm that the pinout that you listed is correct.